How do you change a file name?

I have a couple of clips under %26quot;.mov%26quot; and microsoft movie maker dosen't support that, so how do I change the file to support another type?How do you change a file name?first, submit the proper papers to the Royal High Court with the appropriate fee. Then simply sit back and let nature take its course.How do you change a file name?google 'convert mov to wmv'How do you change a file name?use media converter http://www.mediaconverter.com/